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Permanent link (DOI): https://doi.org/10.7939/R3V40KD0D

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Microstructure and Mechanical Characterization of Rapidly Solidified Cr-C Tool Steel - Annealing Effects Open Access

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Author or creator
P. Delshad Khatibi
Additional contributors
H. Henein
A.B. Phillion
Subject/Keyword
Tool Steel
Powder Processing
Retained Austenite
Microstructure
Rapid Solidification
Type of item
Journal Article (Published)
Language
English
Place
Time
Description
The effect of isochronal annealing on D2 tool steel powder, rapidly solidified via both Impulse Atomization and Water Atomization, has been evaluated using high-resolution scanning electron microscopy and Vickers microhardness. The amount of supersaturation of the alloying elements inside the retained austenite phase as a function of eutectic undercooling was calculated. The fraction of austenite transformed to ferrite at different annealing temperatures (from 350°C to 810°C) was also determined, using Rietveld analysis. The results show that although the particles with larger eutectic undercooling have larger supersaturation of alloying elements within the retained austenite phase, they have a smaller fraction of austenite to ferrite transformation at the temperature in which transformation starts. The maximum hardness was achieved at an annealing temperature of 550°C, due to the formation of fine and well-distributed carbides.
Date created
2016
DOI
doi:10.7939/R3V40KD0D
License information
Attribution-NonCommercial-NoDerivs 4.0 International
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